$$\left. \begin{array} { l } { C = 11 \times ( 6 + 5 ) } \\ { A = 14 + 2 \times 16 - 7 = 32 } \\ { B = 20 , 5 + 5 , 5 \div 2 + 11 = 24 } \\ { C = 23 - 5 \div 4 \times 15 = 3 } \end{array} \right.$$
